58 IOWA STUDIES IN NATURAL HISTORY 
chie arise from a a firm spiral base, and have . . . ocular spots 
on the outer edge.’? The specimen provisionally classified as 
Bispira melania does not have a spiral formation or ocular 
spots. If the presence of ocular spots is a generic character, 
this form does not fit in the genus Bispira. Professor A. L. 
Treadwell has kindly suggested following R. V. Chamberlin’s 
classification in his monograph on the Pacific annelids, as his 
diagnostic generic characters seem very accurate; but to date 
the writer has not been able to secure this reference. 
REFERENCES 
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Three Cruises of the ‘‘Blake.’’ Bull. Museum Comparative 
Zoology, Cambridge, Massachusetts, XIV-XV. (Worms, XV, p. 52, 
with woodcuts.) 1889. 
Alder, H. Peculiarity in the structure of the shell of Serpula triquetra. 
Rep. Brit. Assoe. Adv. Science, p. 206, London, England. 1866. 
Andrews, E. A. Annelida Polycheta of Beaufort, North Carolina. 
(Separate.) Proc. U. S. National Museum, XIV, p. 277, pls. xii-xviii, 
Washington, D. C. 1891. 
On the Eyes of Polycheta. Zool. Anzeiger, XIV, p. 285, Leip- 
zig, Germany. 1892. 
——CCompound Eyes of Annelids. Journ. Morphol., V, p. 271, 2 
plates, Boston, Massachusetts. 
Arnold, A. F. Sea-Beach at Ebb-Tide. The Century Co. 1901. 
Augener, Herman Von. Westindische Polycheten. Harvard Museum of 
Comparative Zoology. 1906. 
Baird, W. Description of several new species and varieties of Tubicolous 
Annelides—Tribe Limivera of Grube, in the British Museum. Journ. 
Linn. Soc. London, VIII, p. 10, pls. i-iii On new Tubicolous Annelids 
in the British Museum. Journ. Linn. Soe. London, VIII, p. 157, pl. v. 
1865. 
New Tubicolous Annelids in the British Museum. Journ. Linn. 
Soe. London, XI, p. 94. 1873. 
Benedict, J. E.. Description of ten species and one new genus of Annelids 
from the dredgings of the U. S. Fish Commission Steamer Albatross. 
(Separate.) Proc. U. 8. Nat. Museum, IX, p. 547, pls. xx-xxv, Wash- 
ington. 1886. 
Benham, W. B. Polychaet Worms. Cambridge Natural History, Vol. 2. 
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Bush, K. J. On Spirorbis from Japan, in Moore’s Report on Sabellidee 
